非典型のカデリンFAT1は,低酸素または栄養ストレス下でのグリブロスタモの自殺細胞死を抑制することによって腫瘍形成を促進する.
PubMedで要約を見る
まとめ
この要約は機械生成です。FAT1タンパク質は,自己消化による細胞死を抑制し,癌の成長を促します. FAT1を阻害すると,この細胞死経路を再活性化することで,がん治療が改善される可能性があります.
科学分野
- 腫瘍学
- 細胞生物学
- 分子生物学
背景
- 細胞の生存を促すか 細胞の死滅を促すかのどちらかです
- 非典型のカデリンFAT1は,文脈に依存する腫瘍性または腫瘍抑制的機能を有する.
- FAT1は膠原腫で腫瘍性であり,オートファギーは膠原腫で制御不能である.
研究 の 目的
- グリオブラストーマにおけるオートファギーの調節におけるFAT1の役割を調査する.
- グリオブラストーマの成長と進行に対する FAT1 調節されたオートファギーの影響を決定する.
主な方法
- グリオブラストーマ,肝細胞癌,およびCRISPR- Cas9を用いた臓がん細胞系におけるFAT1ノックアウト生成
- 評価された細胞活性,成長,および自己消化マーカー (qPCR,ウエスタンブロット,ICC,IHC,TEM,p62/SQSTM1,LC3点).
- オートファジー流量評価とイン・ビヴォ・クセノ移植とヒト・グリオブラストーマの腫瘍データを分析した.
主要な成果
- FAT1のノックアウトは,膠芽細胞の生存率とコロニー形成を低下させ,オートファギー依存の細胞死を引き起こした.
- FAT1 ノックアウトは,自己消化マーカーを上昇させ,自己消化細胞と自己消化フルスを増やし,mTORシグナリングを減少させた.
- FAT1 ノックアウトの異種移植は腫瘍の進行を減少させ,ヒトの腫瘍は逆の FAT1/ LC3B 相関を示し,高レベルの FAT1 は生存率の低下と関連していた.
結論
- FAT1はオートファージ細胞死を抑制することで,膠芽細胞腫や他の癌を促進する.
- FAT1は,高い FAT1発現と腫瘍性役割を持つがんの治療標的または補助剤である可能性があります.
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